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Array type annular electrostatic sensor and pneumatic transmission powder measurement device and method

An electrostatic sensor and array technology, which is used in measuring devices, electrostatic field measurement, conveying bulk materials, etc., can solve the problems of instrument failure, low reliability, measurement errors, etc., to achieve convenient installation and maintenance, wide measurable range, Implement simple effects

Inactive Publication Date: 2015-01-28
BEIJING ENLANDAR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the complexity of powder movement, traditional single or double ring electrode systems often have measurement errors in industrial applications, resulting in instrument failure and low reliability.

Method used

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  • Array type annular electrostatic sensor and pneumatic transmission powder measurement device and method
  • Array type annular electrostatic sensor and pneumatic transmission powder measurement device and method
  • Array type annular electrostatic sensor and pneumatic transmission powder measurement device and method

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Comparison scheme
Effect test

Embodiment 1

[0031] figure 2 Schematic diagram of the structure of the arrayed annular electrostatic sensor provided by the embodiment of the present invention; image 3 for figure 2 A-A sectional schematic of the sensor and mounting flange shown. Depend on figure 2 and image 3 It can be seen that:

[0032] The array type annular electrostatic sensor provided in this embodiment includes a metal tubular body 2, and at least one set of first metal electrodes 1 and at least one set of second metal electrodes are arranged side by side on the inner peripheral surface of the metal tubular body 2. 3. The first metal electrode 1 and the second metal electrode 3 are annular, and the axial width of the first metal electrode 1 is smaller than the axial width of the second metal electrode 3 . The second metal electrode is used for powder flow measurement, and the first metal electrode is used for powder flow velocity measurement and serves as an auxiliary flow measurement. The axial sensitiv...

Embodiment 2

[0043] This embodiment provides a pneumatically conveyed powder measuring device based on an array type annular electrostatic sensor. figure 1 Schematic diagram of the structure of the pneumatic conveying powder measuring device provided by the embodiment of the present invention. Depend on figure 1 It can be seen that the pneumatically conveyed powder measuring device based on the arrayed annular electrostatic sensor involved in this embodiment includes an arrayed annular electrostatic sensor, an embedded signal processing module, a multi-data fusion module and a central analysis module:

[0044] A plurality of the aforementioned array-type annular electrostatic sensors are used to obtain electrostatic signals caused by powder flow;

[0045] The embedded signal processing module is used to receive and process the electrostatic signal obtained by the array ring electrostatic sensor to obtain the electrostatic digital signal, and obtain the flow velocity information and flow i...

Embodiment 3

[0051] This embodiment provides a method for measuring pneumatically conveyed powder based on an annular electrostatic sensor, which mainly includes the following steps:

[0052] Step 1. A plurality of the aforementioned arrayed annular electrostatic sensors are used to obtain electrostatic signals caused by powder flow;

[0053] Step 2, the embedded signal processing module receives the electrostatic signal obtained by the array ring electrostatic sensor to obtain the electrostatic digital signal, and obtains the flow velocity information and flow information of the powder according to the electrostatic digital signal; the processing is to The electrostatic signal undergoes current / voltage conversion (the electrostatic signal is converted into a voltage signal through resistance), amplification and filtering, and then performs analog / digital signal conversion; at the same time, the embedded microprocessor is used to process the powder flow velocity and flow information;

[00...

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PUM

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Abstract

The invention relates to an array type annular electrostatic sensor and a pneumatic transmission powder measurement device and method. The array type annular electrostatic sensor comprises a tubular metal body, at least one set of first metal electrodes and at least one set of second metal electrodes are sequentially arranged on the inner circumferential face of the tubular metal body in a winding mode side by side, the first metal electrodes and the second metal electrodes are annular, and the axial width of the first metal electrodes is smaller than the axial width of the second metal electrodes. The invention further relates to the pneumatic transmission powder measurement device and method based on the sensor. By means of the method, main motion parameters of powder are monitored in real time under the condition that flowing of the powder is not interfered, the measurable range is large, the service life of the sensor is long, installation and maintenance are convenient, and the sensor can be widely used in industrial processes with the pneumatic transmission powder.

Description

technical field [0001] The invention relates to the technical field of industrial pneumatic conveying powder testing, in particular to an array type annular electrostatic sensor, a pneumatic conveying powder measuring device and a method. Background technique [0002] Pneumatic conveying of powder widely exists in industries such as thermal power generation, metallurgy, food processing, cement and chemical industry. Accurate and continuous on-line measurement of powder motion parameters is of great significance to ensure production safety and improve production efficiency. The high complexity of powder movement in the airflow and the harsh conditions of industrial production sites make measurement methods based on technologies such as capacitance, optics, electromagnetic waves, radiation, heat conduction, and acoustics unable to operate reliably and stably in industrial environments for a long time. [0003] Electrostatic technology has broad industrial application prospect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R29/12G01D21/02B65G53/66
Inventor 钱相臣黄孝彬胡永辉闫勇
Owner BEIJING ENLANDAR TECH
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